Elements Of Remote Sensing
Earth observations from a satellite platform provide:

All of these
Synoptic view of a large area
Repetitive observations of the same area with intervals of a few minutes to a few weeks
Constant solar zenith angles and similar illumination conditions

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Elements Of Remote Sensing
Which one of the following residual biases involves the GPS accuracy?

All listed here
Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
Signal propagation biases due to the sphere and troposphere propagation
Receiver-dependent biases due to clock stability with line

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Elements Of Remote Sensing
According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n₁) on another medium (refractive index m₂);

Neither (A) nor (B)
The angle of incidence is equal to the angle of refraction
Both (A) and (B)
The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi

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